CN104204539B - Electric blower - Google Patents
Electric blower Download PDFInfo
- Publication number
- CN104204539B CN104204539B CN201380015094.3A CN201380015094A CN104204539B CN 104204539 B CN104204539 B CN 104204539B CN 201380015094 A CN201380015094 A CN 201380015094A CN 104204539 B CN104204539 B CN 104204539B
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- China
- Prior art keywords
- fan
- mentioned
- sealing member
- electric blower
- suction hole
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Fan (3) has suction side cover plate (3a) and has suction hole (22) at the central part of this suction side cover plate (3a).Fan hub (2) has peristome (13) in the position facing with suction hole (22).Fan sealing member (4) is arranged between the internal face (2a) of fan hub (2) and the suction hole side end face (3b) of suction side cover plate (3a).Peristome (13) has multiple mushroom anchor firmware (2b).Fan sealing member (4) has maintaining part (4b) that can be chimeric with mushroom anchor firmware (2b).Fan sealing member (4) is pressed into the fan hub (2) with mushroom anchor firmware (2b).
Description
Technical field
The present invention relates to the electric blower that the electrical equipment such as electric dust collector, hand dryer is used.
Background technology
In recent years, electrical equipment develops to power saving aspect.Accompany with this, the electronic air blast that electrical equipment is used
For machine, it is strongly required high output, high efficiency.Especially, require to reach higher to the electric dust collector as electrical equipment
Suction operation efficiency.
Hereinafter, use Figure 14 that conventional electric blower is illustrated.The motor of electric blower and fan unit
It is integrally formed.Fan unit is to remain airtight relative to motor, i.e. the state of adaptation is installed on motor.Fan unit
It is made up of air guide member 101, fan hub 102, fan 103 and fan hub pad (fan case spacer) 104.Fan 103 has
There is suction side cover plate 103a.Fan 103 has suction hole 122 at the central part of suction side cover plate 103a.
Figure 15 is the profile after being amplified in the Z portion shown in Figure 14.The suction of the suction side cover plate 103a that fan 103 is had
The circumferential lateral surface of the corrugated part 104a that pore side end face 103b is had with fan hub pad 104 contacts.Or, suction side cover plate
There is between suction hole side end face 103b and the circumferential lateral surface of corrugated part 104a of 103a the most small of below 0.1mm left and right
Interval.Suction side cover plate 103a and fan hub pad 104 are configured to above-mentioned state, so that it is guaranteed that air-tightness, i.e. adaptation.
And, fan hub pad 104 is fixed on fan hub 102 in order to ensure the air-tightness between itself and fan hub 102.
Fan hub pad 104 is by welding or is bonded and fixed to fan hub 102.As the skill relevant to this conventional electric blower
Art, has described in patent documentation 1.
But, conventional electric blower has following aspect to be improved.
First aspect, the corrugated part 104a that fan hub pad 104 is had is such shape, i.e. its dimensional accuracy, especially
It is that the dimensional accuracy of the circumferential lateral surface facing with suction side cover plate 103a of corrugated part 104a is difficult to stable.
Second aspect, owing to fan hub pad 104 is fixed in fan hub 102 by welding, or passes through
Bonding and be fixed in fan hub 102, therefore, there is the fan hub pad 104 of corrugated part 104a and there is suction side cover plate
The axiality of the fan 103 of 103a, the degree being i.e. positioned on same axle is deteriorated.Its result, the circumferential lateral surface of corrugated part 104a with
The axiality of the suction hole side end face 103b of suction side cover plate 103a is deteriorated.
The third aspect, is the circularity about corrugated part 104a.That is, if making electric blower operate, will be at motor
Part produces heat.In the case of fan hub 102 is formed by metal material, this heat is via the fan hub 102 as metal material
It is delivered to fan hub pad 104.The heat that transmission comes makes the temperature of fan hub pad 104 rise.At the fan hub that temperature rises
Produce the expansion etc. caused by heat on pad 104 sometimes to deform.If fan hub pad 104 deforms, then constitute fan hub
The out of roundness of the corrugated part 104a of pad 104 local can be deteriorated.
If it occur that the variation equidimension deterioration in accuracy of the variation of axiality, circularity, the then air-breathing being had at fan 103
Between the circumferential lateral surface of the corrugated part 104a that the suction hole side end face 103b of side cover plate 103a and fan hub pad 104 are had,
Air-tightness can become insufficient.If air-tightness becomes insufficient, then the air discharged from fan 103 periphery is sometimes at fan
The upper section of suction side cover plate 103a that 103 are had flows backwards with the gap location of fan hub 102.Such refluence phenomenon
It is related to the suction port section to fan 103, the i.e. leakage of suction hole 122.Its result, the suction port section of fan 103 true
The rising of pneumatics power is obstructed, and therefore causes the output of electric blower to reduce.In electric dust collector, electric blower defeated
Go out to reduce this situation and be related to the reduction of suction operation efficiency.
It addition, after fan hub pad 104 and fan hub 102 are welded, or by fan hub pad 104 and fan
After shell 102 is bonded together, fan hub 102 is pressed into the bracket (bracket) of electric blower.So, fan hub 102 is solid
Bracket due to electric blower.Had with fan hub pad 104 at the suction hole side end face 103b of suction side cover plate 103a
The state that contacts of the circumferential lateral surface of corrugated part 104a under, fan hub 102 is pressed into bracket.That is, fan hub 102 is being pressed into
During bracket, the stress from suction hole 122 peripheral part is applied on fan hub pad 104.At fan hub pad 104 and fan hub
It is required to resist weld force or the bonding force of this stress between 102.In order to ensure necessary weld force or bonding force,
Need corresponding with weld force or bonding force, for the face that fan hub pad 104 and fan hub 102 are welded or be bonded together
Long-pending.
Therefore, fan hub pad 104 becomes very large type.Fan hub pad 104 is formed by formed products.
In addition, it is desirable to fan hub pad 104 welds or bonds to the operation of fan hub 102.Therefore, conventional electronic
The number of working processes of aerator increases.
Patent documentation 1: Japanese Unexamined Patent Publication 6-323297 publication
Summary of the invention
The electric blower of the present invention comprises excitation body, armature, fan, air guide member, fan hub, fan sealing member and
To brush.
Excitation body is held in bracket.Armature is supported by pair of bearings, and this pair of bearings is positioned at the two ends of armature shaft.A pair electricity
Brush is arranged at bracket.Fan is arranged at the outlet side of armature shaft.Fan has suction side cover plate and at this suction side cover plate
Central part has suction hole.Air guide member is arranged at the exhaust side of fan.Fan hub covers fan and air guide member.Fan hub with suction
The facing position of pore has peristome.Fan sealing member is arranged at internal face and the suction hole of suction side cover plate of fan hub
Between side end face.Using the face facing with internal face of fan sealing member as inner peripheral surface.By fan sealing member and suction hole
Facing face, side end face is as outer peripheral face.Peristome has multiple mushroom anchor firmware.Fan sealing member has energy and mushroom
The maintaining part that shape anchoring piece is chimeric.
Fan sealing member is pressed into fan hub.Fan sealing member is fixed in fan hub.
Accompanying drawing explanation
Fig. 1 is the side view obtained by the partly cut-away of the electric blower by embodiments of the present invention 1.
Fig. 2 is the enlarged drawing of the major part of this electric blower.
Fig. 3 is the installation diagram of the major part of this electric blower shown in Fig. 2.
Fig. 4 is the front view of the major part of the fan hub that this electric blower is had.
Fig. 5 is the enlarged drawing obtained by the major part of fan hub is observed in the arrow A direction shown in Fig. 3.
Fig. 6 is the front view of the fan sealing member that this electric blower is had.
Fig. 7 is the enlarged drawing obtained by the major part of fan sealing member is observed in the arrow B direction shown in Fig. 3.
Fig. 8 is order that the fan hub being had by this electric blower and fan sealing member assemble is described main
The installation diagram of part.
Fig. 9 is order that the fan hub being had by this electric blower and fan sealing member assemble is described main
The installation diagram of part.
Figure 10 is the master of the order illustrating that the fan hub being had by this electric blower and fan sealing member assemble
Want the installation diagram of part.
Figure 11 is the fan sealing member that the electric blower of embodiments of the present invention 2 is had, i.e. fan shown in Fig. 7
The 11-11 sectional view of sealing member.
Figure 12 is the fan sealing member that this electric blower is had, i.e. the 12-12 section view of the fan sealing member shown in Fig. 7
Figure.
Figure 13 is the master of the order illustrating that the fan hub being had by this electric blower and fan sealing member assemble
Want the installation diagram of part.
Figure 14 be by the partly cut-away of conventional electric blower obtained by side view.
Figure 15 is the enlarged drawing of the major part of this electric blower.
Detailed description of the invention
The electric blower of embodiments of the present invention utilizes structure described later to solve in conventional electric blower
Content to be improved.
It should be noted that in the following description, thrust direction refers to the axle center side of the armature shaft making fan rotate
To.Formed described later along this axis direction, the suction hole that fan is had.Additionally, described later, fan hub had with this
The facing peristome of suction hole is centrally located on this axis direction.The guide portion constituting peristome is prolonged along this axis direction
Stretch.
Equally, radial direction refers to and the direction of this thrust direction square crossing.
Additionally, the wall that mushroom anchor firmware is the fan hub with Rack, it is referred to as being formed as flange shape
Engaging portion.This flange shape has towards prominent with the both direction that engaging portion bearing of trend intersects in the tip portion of engaging portion
Jut.
It is close that the electric blower of embodiments of the present invention has excitation body, armature, fan, air guide member, fan hub, fan
Sealing and a pair brush.
Excitation body is held in bracket.Armature is supported by pair of bearings, and this pair of bearings is positioned at the two ends of armature shaft.A pair electricity
Brush is arranged at bracket.Fan is arranged at the outlet side of armature shaft.Fan has suction side cover plate and at this suction side cover plate
Central part has suction hole.Air guide member is arranged at the exhaust side of fan.Fan hub covers fan and air guide member.Fan hub with suction
The facing position of pore has peristome.Fan sealing member is arranged at internal face and the suction hole of suction side cover plate of fan hub
Between side end face.Using the face facing with internal face of fan sealing member as inner peripheral surface.By fan sealing member and suction hole
Facing face, side end face is as outer peripheral face.Peristome has multiple mushroom anchor firmware.Fan sealing member has energy and mushroom
The maintaining part that shape anchoring piece is chimeric.
In this configuration, the fan sealing member that the shape with fan hub is coincide is pressed into the fan with mushroom anchor firmware
Shell.Now, the maintaining part that fan sealing member is had is pressed into the mushroom anchor firmware that fan hub is had.Its result, mushroom
Shape anchoring piece and maintaining part tabling.So, fan sealing member is fixed in fan hub.
It is pressed into fan hub owing to being configured to fan sealing member, therefore, it is possible to maintain, fan sealing member is held in fan hub
The intensity of thrust direction.
And, in the electric blower of embodiments of the present invention, peristome has suction hole side opening end, outside is opened
Mouth end and guide portion.
Suction hole side opening end opens wide towards suction hole.Outer openings end opens wide towards the outside of fan hub.Guide portion will
Suction hole side opening end couples together with outer openings end.Guide portion is in the thrust direction that guide portion extends, in suction hole side
The surrounding of opening has multiple mushroom anchor firmware.
Use this structure, in addition to above-mentioned effect, effect, following effect, effect can be obtained.
That is, the material that fan sealing member is had elastic force by rubber, resin etc. is formed, and therefore, fan sealing member is formed as
Shape along the peristome of fan hub.
Specifically, the inner peripheral surface of fan sealing member is formed along the internal face of the periphery of guide portion, i.e. fan hub
Shape.The back side of the inner peripheral surface of fan sealing member, the i.e. outer peripheral face of fan sealing member are again formed as the internal face along fan hub
Shape.Its result, the dimensionally stable of the outer peripheral face of fan sealing member.Therefore, the suction with suction side cover plate of fan sealing member
Pore side end face contacts, or the outer peripheral face facing with the suction hole side end face of suction side cover plate is able to ensure that stable
Axiality, circularity equidimension precision.
It addition, in the electric blower of embodiments of the present invention, maintaining part forms following such shape.
That is, maintaining part is to keep the lobe shape of mushroom anchor firmware on inner peripheral surface.
Especially, in order to realize obvious action effect, there is following such relation.By the thickness of protuberance, i.e. this is convex
Portion is set to t1 from the size that inner peripheral surface is prominent.The gauge of guide portion is set to t2.Size t1 is bigger than size t2.
Use this structure, the inner peripheral surface of fan sealing member is formed with thickness than fan hub, especially constitutes guide portion
The big protuberance of the thickness of wall.That is, to be configured to its top prominent from side, internal face lateral axle center in radial directions for this protuberance
In guide portion.
Therefore, protuberance with maintain fan sealing member relative to fan hub, especially relative to guide portion in radial direction
The mode keeping intensity plays a role.
It addition, in the electric blower of embodiments of the present invention, maintaining part forms following such shape.
That is, maintaining part is made up of a pair protuberance.Maintaining part has inner peripheral surface between a pair protuberance and rolls to outer peripheral face from inner peripheral surface side
Rake tiltedly.Mushroom anchor firmware tilts along rake.
That is, the top ends of mushroom anchor firmware bends to the angle along rake.The top ends quilt of mushroom anchor firmware
Expand.Fan hub is in and is fastened (Japanese: カ シ メ fixes) in the state of fan sealing member.
Therefore, fan sealing member is held in fan hub, thus the intensity of thrust direction and radial direction obtains further
Improve.
Utilizing above-mentioned structure, the fan sealing member of the electric blower of embodiments of the present invention is along fan hub
Internal face is pressed into.Bulged-in fan sealing member is fixed on fan hub such that it is able to guarantee stable air-tightness.Therefore, electricity
The output of dynamic aerator is improved.
It addition, the electric blower of embodiments of the present invention can be small-sized by the sealing member being referred to as fan sealing member
Change.It is capable of fan sealing member and is pressed into such along the internal face of fan hub, easy fixing means.Therefore, it is possible to
Sealing structure cheap in electric blower is provided.
Hereinafter, use Fig. 1～Figure 13 that the electric blower of embodiments of the present invention is described.It should be noted that below
Embodiment as the example that the present invention is embodied, do not limit the technical scope of the present invention.
(embodiment 1)
Fig. 1 be by the partly cut-away of the electric blower of embodiments of the present invention obtained by side view.Fig. 2 is this electricity
The enlarged drawing of the major part of dynamic aerator.Fig. 3 is the installation diagram of the major part of this electric blower shown in Fig. 2.
As it is shown in figure 1, excitation body 5 is fixed on bracket 8.Central part at excitation body 5 is configured with and is supported by pair of bearings 6
Armature 7.Bracket 8 is provided with a pair brush 9.Control the diverter 10 that electric current is had to armature 7 by this pair brush 9
Power supply.When supply controls electric current, armature 7 rotates.At the outlet side of armature shaft 21, air-tightness, i.e. adaptation ground is kept to install
There is fan 3.If armature 7 rotates, then fan 3 also high speed rotating.Fan 3 has suction hole 22 at central part.Fan hub 2 with suction
The facing position of pore 22 has peristome 13.When fan 3 rotates, air flows into from suction hole 22 via peristome 13.
Leaked-in air is discharged to peripheral direction from the inlet portion of fan 3.The air being discharged flows to motor part via air guide member 1.
Fig. 2 is the figure after being amplified in the Y portion shown in Fig. 1.Suction hole side at the suction side cover plate 3a that fan 3 is had
It is configured with fan sealing member 4 between the internal face 2a of face 3b and fan hub 2.Fan sealing member 4 is to keep air-tightness, the closeest
Conjunction property.Fan sealing member 4 is accommodated in the inside of fan hub 2.As shown in Figure 14, Figure 15, conventional electric blower is to be used for
Bubble-tight fan hub pad 104 is kept to be formed in the outside of fan hub 102.In the electric blower that this is conventional and the present invention
The electric blower of embodiment compare in the case of, the electric blower of embodiments of the present invention is by fan
Sealing member 4 is formed in the inside of fan hub 2.Therefore, bubble-tight component miniaturization will be kept.It addition, the embodiment party of the present invention
The total length height of the electric blower of formula is compared with the past to be also reduced.Its result, the electronic air blast of embodiments of the present invention
Machine is capable of electric blower self miniaturization.
Fan sealing member 4 has par, periphery 4a in the outer openings end 13b side of fan hub 2.At fan sealing member 4 quilt
During press-in fan hub 2, par, periphery 4a is kept by press-in jig.The load that par, periphery 4a is applied by press-in jig
Effect.
Fig. 3 represents the state that fan sealing member 4 is pressed into fan hub 2.In figure, arrow F represents that fan sealing member 4 is pressed into
Direction.
As it is shown on figure 3, fan hub 2 has peristome 13.Peristome 13 has suction hole side opening end 13a in side.Open
Oral area 13 has outer openings end 13b at opposite side.Peristome 13 has suction hole side opening end 13a and outer openings end
Guide portion 13c that 13b links up.Guide portion 13c suction hole side opening end 13a be formed around mushroom anchor firmware
2b。
It addition, be provided with the protuberance 4f as maintaining part 4b at the inner peripheral surface 4d of fan sealing member 4.As maintaining part 4b
Protuberance 4f is the structure prominent from the internal face 2a lateral aperture surface 2c side of fan hub 2.
The situation of following relation is met at the gauge of wall and the gauge of protuberance 4f constituting guide portion 13c
Under, it is particularly effective.That is, by the thickness of protuberance 4f, i.e. this protuberance 4f is set to t1 from the size that inner peripheral surface 4d is prominent.By guide portion
The gauge of 13c is set to t2.Size t1 is bigger than size t2.
Using this structure, form protuberance 4f on the inner peripheral surface 4d of fan sealing member 4, the thickness of this protuberance 4f compares fan hub
2, the thickness of the wall especially constituting guide portion 13c is big.That is, this protuberance 4f is configured to its top in radial directions from inwall
Face 2a lateral axle center pleurapophysis is for guide portion 13c.
By shape cost structure, for the stress of the radial direction applied when fan 3 rotates, there is endurance.
Be provided with in the fan side end of fan sealing member 4 inner peripheral surface 4d roll tiltedly from inner peripheral surface 4d lateral outer peripheral face 4e and
The rake 4c become.After fan sealing member 4 has been pressed into fan hub 2, the top of the mushroom anchor firmware 2b that fan hub 2 is had
End bends along rake 4c.Using this structure, fan hub 2 is anchored in thrust direction and radial direction the two direction
Fan sealing member 4.
Fig. 4 is the front view of the major part of the fan hub that the electric blower of embodiments of the present invention is had.Fig. 5
It it is the enlarged drawing of the major part of the fan hub observed from the arrow A direction shown in Fig. 3.
Fig. 4 is the guide portion 13c institute observing the fan hub 2 being formed with peristome 13 from thrust direction (lower section Fig. 1)
The figure obtained.Fig. 5 is to represent the state obtained by guide portion 13c that the fan hub 2 shown in Fig. 3 is had is observed in arrow A side.
Guide portion 13c is provided with 6 mushroom anchor firmware 2b.The number of mushroom anchor firmware 2b is preferably 3～8
Individual.When the number of mushroom anchor firmware 2b is less than 3, the intensity of fan sealing member 4 is kept to reduce.Therefore, rotate at fan 3
Time, for not enough by the endurance rotating the stress produced of fan 3., when fan 3 rotates, there is fan sealing member 4 in its result
There is the risk departed from.In contrast, when the number of mushroom anchor firmware 2b is more than 8, the circularity of guide portion 13c is deteriorated.
When the circularity of guide portion 13c is deteriorated, the circularity of peristome 13 is also deteriorated.When the circularity of peristome 13 is deteriorated, fan 3 and wind
Air-tightness between fan sealing member 4 is deteriorated.Its result, the output of electric blower reduces.
Fig. 6 is the front view of the fan sealing member that the electric blower of embodiments of the present invention is had.Fig. 7 is from figure
The enlarged drawing obtained by the major part of fan sealing member is observed in arrow B direction shown in 3.
Fig. 6 is to observe fan sealing member 4 from thrust direction (lower section Fig. 1).Fig. 7 represents it is to observe Fig. 3 from arrow B side
The state of maintaining part 4b that shown fan sealing member 4 is had.
Fan sealing member 4 is provided with maintaining part 4b.Maintaining part 4b is made up of a pair protuberance 4f.A pair protuberance 4f and position
Match in the space part 2d of the mushroom anchor firmware 2b both sides shown in Fig. 5.Fan sealing member 4 is provided with 6 maintaining parts
4b.That is, fan sealing member 4 is provided with 6 maintaining parts 4b, therefore, is provided with 12 protuberance 4f of total.
For the relation between mushroom anchor firmware 2b and maintaining part 4b, represent its object lesson.
The size of the interval D between a pair protuberance 4f shown in Fig. 7 jaw portion than the mushroom anchor firmware 2b shown in Fig. 5
Little about the 0.5mm of width C of (Japanese: エ ラ portion) 2e.
Axle portion 2f, the i.e. size of the width E of the root of the mushroom anchor firmware 2b shown in Fig. 5 are more convex than a pair shown in Fig. 7
Little about the 0.5mm of interval D between portion 4f.
Here, jaw portion 2e refers in the mushroom anchor firmware 2b of embodiments of the present invention, towards with engaging portion
The jut that the both direction that the direction extended intersects is prominent.It addition, the width C of jaw portion 2e refers on this jut, pin
Width dimensions to the direction that jut highlights.In embodiments of the present invention, width C has the length of 3.5mm.Interval D
There is the length of 3.0mm.
Axle portion 2f refers in the mushroom anchor firmware 2b of embodiments of the present invention, by fan hub 2 main body with from this
The part that the tip portion of the engaging portion that main body is extended couples together.In embodiments of the present invention, width E has
The length of 2.5mm.
The fan hub 2 and fan sealing member 4 with above structure are combined.Fig. 8 to Figure 10 is used to illustrate to combine wind
Fan case 2 and the order of fan sealing member 4.
In fig. 8, will there is the fan sealing member 4 of maintaining part 4b being made up of a pair protuberance 4f towards shown in arrow F
Direction press-in has the fan hub 2 of mushroom anchor firmware 2b.
As shown in Figure 8 and Figure 9, a pair protuberance 4f is pressed into mushroom anchor firmware 2b.As it has been described above, between a pair protuberance 4f
Little about the 0.5mm of width of jaw portion 2e than mushroom anchor firmware 2b of the size of interval D.According to this size, then a pair convex
Portion 4f can be pressed into the mushroom anchor firmware 2b that fan hub 2 is had.
And, as shown in Figure 9 and Figure 10, a pair protuberance 4f is pressed into the jaw portion 2e than mushroom anchor firmware 2b by inner
Position.As it has been described above, the size of the width E of axle portion 2f is than little about the 0.5mm of interval D between a pair protuberance 4f.According to this
Size, then axle portion 2f can be with a pair protuberance 4f tabling.Axle portion 2f is kept by a pair protuberance 4f.
Chimeric fan sealing member 4 is by PP (Polypropylene), PET (Polyethylene terephthalate)
Formed etc. the material with following such characteristic, the even heated characteristic that will carry out shrinking.If it is such by having
The material of characteristic is formed, then be capable of following effect.That is, when electric blower operates, the inside temperature of electric blower
Degree rises.When the internal temperature of electric blower rises, fan sealing member 4 is heated and shrinks.When fan sealing member 4 is subject to
When heat is shunk, fan sealing member 4 copies the shape of fan hub 2.In other words, the inner peripheral surface 4d of fan sealing member 4 and fan
The internal face of shell 2 coincide.Therefore, the inner peripheral surface 4d of fan sealing member 4 and the internal face of fan hub 2 become more stable size essence
Degree.
It addition, by this thermal contraction, it is also possible to acquisition improves maintaining part 4b being had by fan sealing member 4 and is produced
The effect of retentivity.
Above, as use illustrated by Fig. 1 to Fig. 9, the electric blower of embodiments of the present invention comprises excitation
Body 5, armature 7, fan 3, air guide member 1, fan hub 2 fan sealing member 4 and a pair brush 9.
Excitation body 5 is held in bracket 8.Armature 7 is supported by pair of bearings 6, and this pair of bearings 6 is positioned at the two of armature shaft 21
End.A pair brush 9 is arranged at bracket 8.Fan 3 is arranged at the outlet side of armature shaft 21.Fan 3 have suction side cover plate 3a and
Central part at this suction side cover plate 3a has suction hole 22.Air guide member 1 is configured at the exhaust side of fan 3.Fan hub 2 covers wind
Fan 3 and air guide member 1.Fan hub 2 has peristome 13 in the position facing with suction hole 22.Fan sealing member 4 is arranged at wind
Between the internal face 2a and the suction hole side end face 3b of suction side cover plate 3a of fan case 2.By fan sealing member 4 with internal face 2a phase
Faced by face as inner peripheral surface 4d.Using the face facing with suction hole side end face 3b of fan sealing member 4 as outer peripheral face 4e.Open
Oral area 13 has multiple mushroom anchor firmware 2b.Fan sealing member 4 has maintaining part 4b that can be chimeric with mushroom anchor firmware 2b.
In this configuration, the fan sealing member 4 that the shape with fan hub 2 is coincide is pressed into has mushroom anchor firmware 2b's
Fan hub 2.Now, maintaining part 4b that fan sealing member 4 is had is pressed into the mushroom anchor firmware 2b that fan hub 2 is had.
Its result, mushroom anchor firmware 2b and maintaining part 4b tabling.So, fan sealing member 4 is fixed in fan hub 2.
It is pressed into fan hub 2 owing to being configured to fan sealing member 4, therefore, it is possible to maintain, fan sealing member 4 is held in wind
The intensity of the thrust direction of fan case 2.
And, in the electric blower of embodiments of the present invention, peristome 13 have suction hole side opening end 13a,
Outer openings end 13b and guide portion 13c.
Suction hole side opening end 13a opens wide towards suction hole 22.Outer openings end 13b opens wide towards the outside of fan hub 2.
Suction hole side opening end 13a and outer openings end 13b is coupled together by guide portion 13c.Guide portion 13c extends in guide portion 13c
Thrust direction on, there is around suction hole side opening end 13a multiple mushroom anchor firmware 2b.In the present embodiment,
Especially, the tip portion of the suction hole side opening end 13a being had along fan hub 2 is formed with multiple mushroom anchor firmware
2b。
Additionally, the position forming multiple mushroom anchor firmware 2b is not limited to the top ends of suction hole side opening end 13a
Point.If able to maintain the air-tightness between fan hub 2 and fan sealing member 4 described later, then form the anchoring of multiple mushroom-shaped
As long as the position of part 2b is near suction hole side opening end 13a, it is also possible to be other positions.
Use this structure, in addition to above-mentioned effect, effect, it is possible to obtain following effect, effect.
That is, the material that fan sealing member 4 is had elastic force by rubber, resin etc. is formed, and therefore, fan sealing member 4 is formed
Shape for the peristome 13 along fan hub 2.
Specifically, the inner peripheral surface 4d of fan sealing member 4 is formed along the periphery of guide portion 13c, and i.e. fan hub 2 is interior
The shape of wall 2a.The outer peripheral face 4e at the back side of the inner peripheral surface 4d of fan sealing member 4, i.e. fan sealing member 4 be again formed as along
The shape of the internal face 2a of fan hub 2.Its result, the dimensionally stable of the outer peripheral face 4e of fan sealing member 4.Therefore, fan seals
The suction hole side end face 3b with suction side cover plate 3a of part 4 contacts, or with the suction hole side end face of suction side cover plate 3a
Outer peripheral face 4e facing for 3b is able to ensure that stable axiality, circularity equidimension precision.
It addition, in the electric blower of embodiments of the present invention, maintaining part 4b is formed as following such shape.
That is, maintaining part 4b is to keep the lobe shape of mushroom anchor firmware 2b on inner peripheral surface 4d.In the present embodiment, by wind
When fan sealing member 4 has been pressed into fan hub 2, this protuberance 4f highlights towards the center of peristome 13.
Especially, in order to realize obvious action effect, there is following such relation.By the thickness of protuberance 4f, i.e. should
Protuberance 4f is set to t1 from the size that inner peripheral surface 4d is prominent.The gauge of guide portion 13c is set to t2.Size t1 is than size t2
Greatly.
Use this structure, the inner peripheral surface 4d of fan sealing member 4 is formed with thickness than fan hub 2, especially than composition
The protuberance 4f that the thickness of the wall of guide portion 13c is big.That is, this protuberance 4f is configured to its top in radial directions from internal face 2a
Lateral axle center pleurapophysis is for guide portion 13c.
Therefore, protuberance 4f with maintain fan sealing member 4 relative to fan hub 2, especially relative to guide portion 13c radially
The mode of the holding intensity in direction plays a role.
(embodiment 2)
Use Figure 11 to Figure 13 on the basis of above-mentioned embodiments of the present invention 1, it is achieved especially obvious action
The structure of effect, i.e. embodiments of the present invention 2 illustrate.
It should be noted that for the structural element identical with embodiment 1, mark identical reference.For with
The structural element that embodiment 1 is identical will quote the explanation of embodiment 1.
Figure 11 is the fan sealing member that the electric blower of embodiments of the present invention 2 is had, i.e. fan shown in Fig. 7
The 11-11 sectional view of sealing member.Figure 12 is the fan sealing member that this electric blower is had, i.e. fan shown in Fig. 7 seals
The 12-12 sectional view of part.Figure 13 is to illustrate that the fan hub being had by this electric blower and fan sealing member assemble
The installation diagram of the major part of order.
As shown in Fig. 7, Figure 12, maintaining part 4b forms following such shape.That is, maintaining part 4b is by a pair protuberance 4f
Constitute.As shown in figure 11, maintaining part 4b has inner peripheral surface 4d from inner peripheral surface 4d side towards outer peripheral face 4e between a pair protuberance 4f
Roll rake 4c tiltedly.
In embodiment 1, as use illustrated by Figure 10, fan sealing member 4 is pressed into fan hub 2.Afterwards, as
Shown in Figure 13, the inclined plane of the rake 4c that mushroom anchor firmware 2b is had along fan sealing member 4, bend to along inclination
The angle in face.That is, mushroom anchor firmware 2b tilts along rake 4c.
This structure, the top ends of mushroom anchor firmware 2b is used to bend to the angle along rake 4c.Mushroom-shaped anchors
The top ends of part 2b has the both direction intersected towards the direction extended with mushroom anchor firmware 2b from the main body of fan hub 2 and dashes forward
The jut gone out.Due to this jut and a pair protuberance 4f engaging, therefore fan hub 2 is in and is fastened onto fan sealing member 4
State.
Its result, centered by the top ends of rake 4c and mushroom anchor firmware 2b, the inner peripheral surface 4d of fan sealing member 4
Become the shape of the internal face 2a of the periphery along guide portion 13c, i.e. fan hub 2.The back of the body of the inner peripheral surface 4d of fan sealing member 4
The outer peripheral face 4e in face, i.e. fan sealing member 4 also becomes the shape of the internal face 2a along fan hub 2.Its result, fan sealing member
The shape of the outer peripheral face 4e of 4 is more stable than the situation illustrated by embodiment 1.Therefore, fan sealing member 4 with air-breathing side cover
The suction hole side end face 3b contact of plate 3a, or the outer peripheral face facing with the suction hole side end face 3b of suction side cover plate 3a
4e is able to ensure that stable axiality, circularity equidimension precision.
Therefore, fan sealing member 4 is held in fan hub 2, thus the intensity of thrust direction and radial direction is further
To improving.In other words, fan sealing member 4 can be anchored on fan hub 2 for thrust direction and radial direction the two direction.
Its result, the electric blower of embodiments of the present invention 2 is able to ensure that stable air-tightness.Therefore, electronic drum
The output of blower fan is improved.
Can be it is clear that in the electric blower of embodiments of the present invention, fan seals according to above explanation
Part is pressed directly into the internal face mode of contacting of fan hub with inner circumferential surface.Mushroom anchor firmware engages with maintaining part.Wind
Fan case 2 becomes the state being anchored on fan sealing member 4.Therefore, bulged-in fan sealing member is fixed on fan hub, thus electronic
Aerator is able to ensure that stable air-tightness.Therefore, the output of electric blower is improved.
Especially, the inclination that the top ends of the mushroom anchor firmware that fan hub is had is had along fan sealing member 4
Portion bends.This structure, air-tightness is used to be further enhanced.
It addition, use the electric blower of embodiments of the present invention, compared with conventional electric blower, it is possible to realize
The miniaturization of sealing member.And, use the electric blower of embodiments of the present invention, it is not necessary to bonding, welding is fixed,
Can be fixed with easy structure.Therefore, the electric blower of embodiments of the present invention is capable of cheap sealing
Structure.
Industrial applicability
The electric blower of the present invention can utilize cheap sealing structure to guarantee gas stable between fan and fan hub
Close property.The electric blower of the present invention can be applied to the electrical equipment such as electric dust collector, hand dryer etc..
Description of reference numerals
1 air guide member
2 fan hubs
2a internal face
2b mushroom anchor firmware
2c aperture surface
2d space part
2e jaw portion
2f axle portion
3 fans
3a suction side cover plate
3b suction hole side end face
4 fan sealing members
Par, 4a periphery
4b maintaining part
4c rake
4d inner peripheral surface
4e outer peripheral face
4f protuberance
5 excitation bodies
6 bearings
7 armatures
8 brackets
9 brushes
10 diverters
13 peristomes
13a suction hole side opening end
13b outer openings end
13c guide portion
21 armature shafts
22 suction holes
Claims (7)
1. an electric blower, including:
Excitation body, it is held in bracket；
Armature, this armature is supported by pair of bearings, and this pair of bearings is positioned at the two ends of armature shaft；
A pair brush, it is arranged at above-mentioned bracket；
Fan, it is arranged at the outlet side of above-mentioned armature shaft, has suction side cover plate and the central part at this suction side cover plate
There is suction hole；And
Fan hub, it covers said fans,
It is characterized in that, described electric blower also includes:
Air guide member, it is arranged at the exhaust side of said fans；And
Fan sealing member, it is arranged between the internal face of said fans shell and the suction hole side end face of above-mentioned suction side cover plate,
Using the face facing with above-mentioned internal face as inner peripheral surface, and using the face facing with above-mentioned suction hole side end face as periphery
Face,
Wherein, described fan hub covers described air guide member, and described fan hub has out in the position facing with above-mentioned suction hole
Oral area,
Above-mentioned peristome has multiple mushroom anchor firmware, and
Said fans sealing member has maintaining part that can be chimeric with above-mentioned mushroom anchor firmware.
Electric blower the most according to claim 1, wherein,
Above-mentioned peristome has: the suction hole side opening end opened wide towards above-mentioned suction hole, opens towards the outside of said fans shell
The outer openings end opened and the guide portion that above-mentioned suction hole side opening end and above-mentioned outer openings end are coupled together,
In the thrust direction that guide sections extends, guide sections has above-mentioned around above-mentioned suction hole side opening end
Multiple mushroom anchor firmwares.
Electric blower the most according to claim 2, wherein,
Above-mentioned maintaining part is to keep the protuberance of above-mentioned mushroom anchor firmware on above-mentioned inner peripheral surface.
Electric blower the most according to claim 3, wherein,
The thickness of raised part, i.e. raised part are being set to t1, by guide sections from the size that above-mentioned inner peripheral surface is prominent
In the case of gauge is set to t2, size t1 is bigger than size t2.
Electric blower the most according to claim 3, wherein,
Above-mentioned maintaining part is made up of a pair protuberance, and has above-mentioned inner peripheral surface from above-mentioned inner peripheral surface between above-mentioned a pair protuberance
Lateral above-mentioned outer peripheral face rolls rake tiltedly,
Above-mentioned mushroom anchor firmware tilts along above-mentioned rake.
Electric blower the most according to claim 1, wherein,
Above-mentioned maintaining part is to keep the protuberance of above-mentioned mushroom anchor firmware on above-mentioned inner peripheral surface.
Electric blower the most according to claim 6, wherein,
Above-mentioned maintaining part is made up of a pair protuberance, and has above-mentioned inner peripheral surface from above-mentioned inner peripheral surface between above-mentioned a pair protuberance
Lateral above-mentioned outer peripheral face rolls rake tiltedly,
Above-mentioned mushroom anchor firmware tilts along above-mentioned rake.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012063016 | 2012-03-21 | ||
| JP2012-063016 | 2012-03-21 | ||
| PCT/JP2013/001286 WO2013140723A1 (en) | 2012-03-21 | 2013-03-04 | Electric air blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104204539A CN104204539A (en) | 2014-12-10 |
| CN104204539B true CN104204539B (en) | 2016-11-23 |
Family
ID=49222207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380015094.3A Active CN104204539B (en) | 2012-03-21 | 2013-03-04 | Electric blower |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9644635B2 (en) |
| EP (1) | EP2829736B1 (en) |
| JP (1) | JP6074600B2 (en) |
| CN (1) | CN104204539B (en) |
| WO (1) | WO2013140723A1 (en) |
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| JP6450928B2 (en) * | 2014-10-17 | 2019-01-16 | パナソニックＩｐマネジメント株式会社 | Electric blower and electric vacuum cleaner using the same |
| KR102330551B1 (en) | 2015-03-12 | 2021-11-24 | 엘지전자 주식회사 | Vacuum suntion unit |
| US20170259929A1 (en) * | 2016-03-10 | 2017-09-14 | General Electric Company | Method and system for mounting an aircraft engine |
| JP2018096312A (en) * | 2016-12-15 | 2018-06-21 | ダイキン工業株式会社 | Blower, and refrigeration device with blower |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104204539A (en) | 2014-12-10 |
| JPWO2013140723A1 (en) | 2015-08-03 |
| EP2829736A1 (en) | 2015-01-28 |
| WO2013140723A1 (en) | 2013-09-26 |
| JP6074600B2 (en) | 2017-02-08 |
| EP2829736A4 (en) | 2015-03-11 |
| EP2829736B1 (en) | 2016-02-24 |
| US9644635B2 (en) | 2017-05-09 |
| US20140369870A1 (en) | 2014-12-18 |
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